<p>This PowerPoint provides an overview and step-by-step method for calculating Chi-squared. It is illustrated with 3 examples, including one using contingency tables. The formula and notation used are in line with the AQA GCE Human Biology Students’ Statistics Sheet (version 2.2).</p>

Powerpoint showing step by step how to work out chi squared

Chi Squared

An accompanying worksheet to go with the powerpoint on Spearmans rank correlation coefficient and Chi Squared tests

A worked example of the Chi Square test based on a genetic cross. The presentation starts by putting the method in words, before going through a worked example involving Smooth and Wrinkled Pea Pods. Designed to support Level 3 BTEC Applied Science class, but would make a good introduction to the topic.

<p>A workbook for the statistics in the NEW A-level Biology AQA. Includes Student’s t test, Chi-squared, Spearman’s Rank. Also includes Standard Error and Standard deviation.<br /> This is version 2 with an answer booklet.</p>

Practise in writing a null hypothesis, choosing and carrying out a statistical test (from the three required for AQA ISAs), and determining significance. 2 each of chi squared, standard error and spearman rank.

<p>This lesson guides students through the use of the chi-squared test to test the significance of differences between observed and expected results. It is fully-resourced with a detailed PowerPoint and differentiated task worksheets that have been designed to cover point 16.2 (d) of the CIE International A-level Biology specification which states that students should be able to use this statistical test to determine the significance.</p> <p>The lesson has been written to include a step-by-step guide that demonstrates how to carry out the test in small sections. At each step, time is taken to explain any parts which could cause confusion and helpful hints are provided to increase the likelihood of success in exam questions on this topic. Students will understand how to use the phenotypic ratio to calculate the expected numbers and then how to find the critical value in order to compare it against the chi-squared value. A worked example is used to show the working which will be required to access the marks and then the main task challenges the students to apply their knowledge to a series of questions of increasing difficulty.</p>

<p>This resource summarises the four statistical tests required for A level biology (Standard Deviation, T-test, Spearman Rank, Chi-squared). There is a practice question and mark scheme for each test. The questions are Edexcel SNAB but hopefully they’re relevant to other boards.</p>

Over 100 slides powerpoint covering all parts of 3.7.1 Inherited Change (and introduction to Hardy Weinberg (3.7.2) as well) complete with handouts and past paper question practice.<br /> <br /> Key terms card sort to recap AS key terms <br /> Inherited Change Key Terms (and answers)<br /> Monohybrid inheritance Qs <br /> Sickle cell anaemia handout<br /> Multiple alleles and ABO Blood group inheritance handout<br /> Sex inheritance and linkage handout <br /> Dihybrid inheritance handout and autosomal linkage handout<br /> Autosomal linkage past paper Q (and MS)<br /> Epistasis handout with past paper Q (and MS)<br /> Probability and using chi squared handout<br /> More chi squared questions<br /> 2 booklets of loads of 3.7.1 Inherited Change genetics questions - split into even and odd questions (just so one booklet can be given at the end of covering the topic and one before exam leave).

Worked Examples of a chi-squared test.

This is a resource about breeding fictitious creatures known as the &quot;Horny Legged Beasts&quot;. The creatures are a little tounge in cheek but the work is challenging. Covers dihybrid crosses, chi squared, linked genes and co-dominance. <br /> Horny-Legged-Beasts.pdf covers the basic dihybrid cross and allows students to set up a chi squared table. <br /> Horny-Legged-Beasts-1.pdf covers This file looks at what looks like a standard dihybrid cross but turns out to be linked genes. This allows the students to set up a chi squared table and reject the dihybrid model. Also has a challenge question on co-dominant genes. <br /> Horny-Legged-Beasts-Answers.doc file is what it says it is. <br /> Resource to could be used in two parts or as an end of topic homework or test.

<p>KS5<br /> Full lesson that teaches chi squared using examples<br /> All examples fully worked through with answers<br /> Practice exam questions<br /> Worksheets included within the ppt</p>

a power point covering Spearmans Rank Correlation Coefficient and Chi Squared tests for research methods

Chi square, statistical test, A2 ISA, BIO6

Chi Squared Contingency Tables Examples with full worked solutions for the students to annotate and follow.

The fourth in a series of 5 booklets covering the new maths skills requirements in biology for all exam boards. This brilliant resource (created by another user) covers chi-squared, standard deviation, standard error and spearman's rank. <br /> It has clear worked examples, examples for students to do and really clear answer sheets so students can pinpoint exactly where they made any mistakes.<br /> It can be used as a stand alone resource or incorporated into specific topics as the need for maths skills arise.

<p>Aimed at A level Edexcel Geography from 2016 with an eye on their coasts fieldwork.</p> <p>I hope you find this useful.</p>

Cross-number on chi-squared test for Binomial Distribution

For BTEC: UNIT 8 – Using Statistics for Science<br /> LO2: Chi – Square lesson notes (P2, M2, D2)<br /> <br /> In this resource, students will learn <br /> - About the χ2 distribution.<br /> - How to use χ2 tables and workout the number of degrees of freedom, ν (pronounced, “Nu���)<br /> - How to perform a χ2 test for independence between variables, using a contingency table.

This magazine is packed with information on data collection, analysis and representation. It includes statistical tests including chi-squared, T-test, spearman's rank. We explore what significant means and look things such a p values, probability and risk. We also explore how science works. We look at bias, the different types of medical study, and real-life examples of when people misuse or misrepresent statistics. More resources online at www.wellcome.ac.uk/bigpicture/numbers